From: Al Viro <viro@zeniv.linux.org.uk>
To: Yury Norov <yury.norov@gmail.com>
Cc: Yury Norov <ynorov@marvell.com>,
linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Breno Leitao <leitao@debian.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: restore current_thread_info()
Date: Tue, 7 May 2019 23:58:56 +0100 [thread overview]
Message-ID: <20190507225856.GP23075@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20190507225121.18676-1-ynorov@marvell.com>
On Tue, May 07, 2019 at 03:51:21PM -0700, Yury Norov wrote:
> Commit ed1cd6deb013 ("powerpc: Activate CONFIG_THREAD_INFO_IN_TASK")
> removes the function current_thread_info(). It's wrong because the
> function is used in non-arch code and is part of API.
In include/linux/thread_info.h:
#ifdef CONFIG_THREAD_INFO_IN_TASK
/*
* For CONFIG_THREAD_INFO_IN_TASK kernels we need <asm/current.h> for the
* definition of current, but for !CONFIG_THREAD_INFO_IN_TASK kernels,
* including <asm/current.h> can cause a circular dependency on some platforms.
*/
#include <asm/current.h>
#define current_thread_info() ((struct thread_info *)current)
#endif
next prev parent reply other threads:[~2019-05-07 23:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 22:51 [PATCH] powerpc: restore current_thread_info() Yury Norov
2019-05-07 22:58 ` Al Viro [this message]
2019-05-07 23:07 ` Yury Norov
2019-05-08 0:42 ` Michael Ellerman
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